from __future__ import absolute_import, unicode_literals import errno import socket from collections import deque import pytest from billiard.exceptions import RestartFreqExceeded from case import ContextMock, Mock, call, patch, skip from celery.utils.collections import LimitedSet from celery.worker.consumer.agent import Agent from celery.worker.consumer.consumer import (CLOSE, TERMINATE, Consumer, dump_body) from celery.worker.consumer.gossip import Gossip from celery.worker.consumer.heart import Heart from celery.worker.consumer.mingle import Mingle from celery.worker.consumer.tasks import Tasks class test_Consumer: def get_consumer(self, no_hub=False, **kwargs): consumer = Consumer( on_task_request=Mock(), init_callback=Mock(), pool=Mock(), app=self.app, timer=Mock(), controller=Mock(), hub=None if no_hub else Mock(), **kwargs ) consumer.blueprint = Mock(name='blueprint') consumer._restart_state = Mock(name='_restart_state') consumer.connection = _amqp_connection() consumer.connection_errors = (socket.error, OSError,) consumer.conninfo = consumer.connection return consumer def test_repr(self): assert repr(self.get_consumer()) def test_taskbuckets_defaultdict(self): c = self.get_consumer() assert c.task_buckets['fooxasdwx.wewe'] is None @skip.if_python3(reason='buffer type not available') def test_dump_body_buffer(self): msg = Mock() msg.body = 'str' assert dump_body(msg, buffer(msg.body)) # noqa: F821 def test_sets_heartbeat(self): c = self.get_consumer(amqheartbeat=10) assert c.amqheartbeat == 10 self.app.conf.broker_heartbeat = 20 c = self.get_consumer(amqheartbeat=None) assert c.amqheartbeat == 20 def test_gevent_bug_disables_connection_timeout(self): with patch('celery.worker.consumer.consumer._detect_environment') as d: d.return_value = 'gevent' self.app.conf.broker_connection_timeout = 33.33 self.get_consumer() assert self.app.conf.broker_connection_timeout is None def test_limit_moved_to_pool(self): with patch('celery.worker.consumer.consumer.task_reserved') as reserv: c = self.get_consumer() c.on_task_request = Mock(name='on_task_request') request = Mock(name='request') c._limit_move_to_pool(request) reserv.assert_called_with(request) c.on_task_request.assert_called_with(request) def test_update_prefetch_count(self): c = self.get_consumer() c._update_qos_eventually = Mock(name='update_qos') c.initial_prefetch_count = None c.pool.num_processes = None c.prefetch_multiplier = 10 assert c._update_prefetch_count(1) is None c.initial_prefetch_count = 10 c.pool.num_processes = 10 c._update_prefetch_count(8) c._update_qos_eventually.assert_called_with(8) assert c.initial_prefetch_count == 10 * 10 def test_flush_events(self): c = self.get_consumer() c.event_dispatcher = None c._flush_events() c.event_dispatcher = Mock(name='evd') c._flush_events() c.event_dispatcher.flush.assert_called_with() def test_on_send_event_buffered(self): c = self.get_consumer() c.hub = None c.on_send_event_buffered() c.hub = Mock(name='hub') c.on_send_event_buffered() c.hub._ready.add.assert_called_with(c._flush_events) def test_schedule_bucket_request(self): c = self.get_consumer() c.timer = Mock() bucket = Mock() request = Mock() bucket.pop = lambda: bucket.contents.popleft() bucket.can_consume.return_value = True bucket.contents = deque() with patch( 'celery.worker.consumer.consumer.Consumer._limit_move_to_pool' ) as reserv: bucket.contents.append((request, 3)) c._schedule_bucket_request(bucket) bucket.can_consume.assert_called_with(3) reserv.assert_called_with(request) bucket.can_consume.return_value = False bucket.contents = deque() bucket.expected_time.return_value = 3.33 bucket.contents.append((request, 4)) limit_order = c._limit_order c._schedule_bucket_request(bucket) assert c._limit_order == limit_order + 1 bucket.can_consume.assert_called_with(4) c.timer.call_after.assert_called_with( 3.33, c._schedule_bucket_request, (bucket,), priority=c._limit_order, ) bucket.expected_time.assert_called_with(4) assert bucket.pop() == (request, 4) bucket.contents = deque() bucket.can_consume.reset_mock() c._schedule_bucket_request(bucket) bucket.can_consume.assert_not_called() def test_limit_task(self): c = self.get_consumer() bucket = Mock() request = Mock() with patch( 'celery.worker.consumer.consumer.Consumer._schedule_bucket_request' ) as reserv: c._limit_task(request, bucket, 1) bucket.add.assert_called_with((request, 1)) reserv.assert_called_with(bucket) def test_post_eta(self): c = self.get_consumer() c.qos = Mock() bucket = Mock() request = Mock() with patch( 'celery.worker.consumer.consumer.Consumer._schedule_bucket_request' ) as reserv: c._limit_post_eta(request, bucket, 1) c.qos.decrement_eventually.assert_called_with() bucket.add.assert_called_with((request, 1)) reserv.assert_called_with(bucket) def test_start_blueprint_raises_EMFILE(self): c = self.get_consumer() exc = c.blueprint.start.side_effect = OSError() exc.errno = errno.EMFILE with pytest.raises(OSError): c.start() def test_max_restarts_exceeded(self): c = self.get_consumer() def se(*args, **kwargs): c.blueprint.state = CLOSE raise RestartFreqExceeded() c._restart_state.step.side_effect = se c.blueprint.start.side_effect = socket.error() with patch('celery.worker.consumer.consumer.sleep') as sleep: c.start() sleep.assert_called_with(1) def test_do_not_restart_when_closed(self): c = self.get_consumer() c.blueprint.state = None def bp_start(*args, **kwargs): c.blueprint.state = CLOSE c.blueprint.start.side_effect = bp_start with patch('celery.worker.consumer.consumer.sleep'): c.start() c.blueprint.start.assert_called_once_with(c) def test_do_not_restart_when_terminated(self): c = self.get_consumer() c.blueprint.state = None def bp_start(*args, **kwargs): c.blueprint.state = TERMINATE c.blueprint.start.side_effect = bp_start with patch('celery.worker.consumer.consumer.sleep'): c.start() c.blueprint.start.assert_called_once_with(c) def test_no_retry_raises_error(self): self.app.conf.broker_connection_retry = False c = self.get_consumer() c.blueprint.start.side_effect = socket.error() with pytest.raises(socket.error): c.start() def _closer(self, c): def se(*args, **kwargs): c.blueprint.state = CLOSE return se def test_collects_at_restart(self): c = self.get_consumer() c.connection.collect.side_effect = MemoryError() c.blueprint.start.side_effect = socket.error() c.blueprint.restart.side_effect = self._closer(c) c.start() c.connection.collect.assert_called_with() def test_register_with_event_loop(self): c = self.get_consumer() c.register_with_event_loop(Mock(name='loop')) def test_on_close_clears_semaphore_timer_and_reqs(self): with patch('celery.worker.consumer.consumer.reserved_requests') as res: c = self.get_consumer() c.on_close() c.controller.semaphore.clear.assert_called_with() c.timer.clear.assert_called_with() res.clear.assert_called_with() c.pool.flush.assert_called_with() c.controller = None c.timer = None c.pool = None c.on_close() def test_connect_error_handler(self): self.app._connection = _amqp_connection() conn = self.app._connection.return_value c = self.get_consumer() assert c.connect() conn.ensure_connection.assert_called() errback = conn.ensure_connection.call_args[0][0] errback(Mock(), 0) class test_Heart: def test_start(self): c = Mock() c.timer = Mock() c.event_dispatcher = Mock() with patch('celery.worker.heartbeat.Heart') as hcls: h = Heart(c) assert h.enabled assert h.heartbeat_interval is None assert c.heart is None h.start(c) assert c.heart hcls.assert_called_with(c.timer, c.event_dispatcher, h.heartbeat_interval) c.heart.start.assert_called_with() def test_start_heartbeat_interval(self): c = Mock() c.timer = Mock() c.event_dispatcher = Mock() with patch('celery.worker.heartbeat.Heart') as hcls: h = Heart(c, False, 20) assert h.enabled assert h.heartbeat_interval == 20 assert c.heart is None h.start(c) assert c.heart hcls.assert_called_with(c.timer, c.event_dispatcher, h.heartbeat_interval) c.heart.start.assert_called_with() class test_Tasks: def test_stop(self): c = Mock() tasks = Tasks(c) assert c.task_consumer is None assert c.qos is None c.task_consumer = Mock() tasks.stop(c) def test_stop_already_stopped(self): c = Mock() tasks = Tasks(c) tasks.stop(c) class test_Agent: def test_start(self): c = Mock() agent = Agent(c) agent.instantiate = Mock() agent.agent_cls = 'foo:Agent' assert agent.create(c) is not None agent.instantiate.assert_called_with(agent.agent_cls, c.connection) class test_Mingle: def test_start_no_replies(self): c = Mock() c.app.connection_for_read = _amqp_connection() mingle = Mingle(c) I = c.app.control.inspect.return_value = Mock() I.hello.return_value = {} mingle.start(c) def test_start(self): c = Mock() c.app.connection_for_read = _amqp_connection() mingle = Mingle(c) assert mingle.enabled Aig = LimitedSet() Big = LimitedSet() Aig.add('Aig-1') Aig.add('Aig-2') Big.add('Big-1') I = c.app.control.inspect.return_value = Mock() I.hello.return_value = { 'A@example.com': { 'clock': 312, 'revoked': Aig._data, }, 'B@example.com': { 'clock': 29, 'revoked': Big._data, }, 'C@example.com': { 'error': 'unknown method', }, } our_revoked = c.controller.state.revoked = LimitedSet() mingle.start(c) I.hello.assert_called_with(c.hostname, our_revoked._data) c.app.clock.adjust.assert_has_calls([ call(312), call(29), ], any_order=True) assert 'Aig-1' in our_revoked assert 'Aig-2' in our_revoked assert 'Big-1' in our_revoked def _amqp_connection(): connection = ContextMock(name='Connection') connection.return_value = ContextMock(name='connection') connection.return_value.transport.driver_type = 'amqp' return connection class test_Gossip: def test_init(self): c = self.Consumer() c.app.connection_for_read = _amqp_connection() g = Gossip(c) assert g.enabled assert c.gossip is g def test_callbacks(self): c = self.Consumer() c.app.connection_for_read = _amqp_connection() g = Gossip(c) on_node_join = Mock(name='on_node_join') on_node_join2 = Mock(name='on_node_join2') on_node_leave = Mock(name='on_node_leave') on_node_lost = Mock(name='on.node_lost') g.on.node_join.add(on_node_join) g.on.node_join.add(on_node_join2) g.on.node_leave.add(on_node_leave) g.on.node_lost.add(on_node_lost) worker = Mock(name='worker') g.on_node_join(worker) on_node_join.assert_called_with(worker) on_node_join2.assert_called_with(worker) g.on_node_leave(worker) on_node_leave.assert_called_with(worker) g.on_node_lost(worker) on_node_lost.assert_called_with(worker) def test_election(self): c = self.Consumer() c.app.connection_for_read = _amqp_connection() g = Gossip(c) g.start(c) g.election('id', 'topic', 'action') assert g.consensus_replies['id'] == [] g.dispatcher.send.assert_called_with( 'worker-elect', id='id', topic='topic', cver=1, action='action', ) def test_call_task(self): c = self.Consumer() c.app.connection_for_read = _amqp_connection() g = Gossip(c) g.start(c) signature = g.app.signature = Mock(name='app.signature') task = Mock() g.call_task(task) signature.assert_called_with(task) signature.return_value.apply_async.assert_called_with() signature.return_value.apply_async.side_effect = MemoryError() with patch('celery.worker.consumer.gossip.logger') as logger: g.call_task(task) logger.exception.assert_called() def Event(self, id='id', clock=312, hostname='foo@example.com', pid=4312, topic='topic', action='action', cver=1): return { 'id': id, 'clock': clock, 'hostname': hostname, 'pid': pid, 'topic': topic, 'action': action, 'cver': cver, } def test_on_elect(self): c = self.Consumer() c.app.connection_for_read = _amqp_connection() g = Gossip(c) g.start(c) event = self.Event('id1') g.on_elect(event) in_heap = g.consensus_requests['id1'] assert in_heap g.dispatcher.send.assert_called_with('worker-elect-ack', id='id1') event.pop('clock') with patch('celery.worker.consumer.gossip.logger') as logger: g.on_elect(event) logger.exception.assert_called() def Consumer(self, hostname='foo@x.com', pid=4312): c = Mock() c.app.connection = _amqp_connection() c.hostname = hostname c.pid = pid return c def setup_election(self, g, c): g.start(c) g.clock = self.app.clock assert 'idx' not in g.consensus_replies assert g.on_elect_ack({'id': 'idx'}) is None g.state.alive_workers.return_value = [ 'foo@x.com', 'bar@x.com', 'baz@x.com', ] g.consensus_replies['id1'] = [] g.consensus_requests['id1'] = [] e1 = self.Event('id1', 1, 'foo@x.com') e2 = self.Event('id1', 2, 'bar@x.com') e3 = self.Event('id1', 3, 'baz@x.com') g.on_elect(e1) g.on_elect(e2) g.on_elect(e3) assert len(g.consensus_requests['id1']) == 3 with patch('celery.worker.consumer.gossip.info'): g.on_elect_ack(e1) assert len(g.consensus_replies['id1']) == 1 g.on_elect_ack(e2) assert len(g.consensus_replies['id1']) == 2 g.on_elect_ack(e3) with pytest.raises(KeyError): g.consensus_replies['id1'] def test_on_elect_ack_win(self): c = self.Consumer(hostname='foo@x.com') # I will win c.app.connection_for_read = _amqp_connection() g = Gossip(c) handler = g.election_handlers['topic'] = Mock() self.setup_election(g, c) handler.assert_called_with('action') def test_on_elect_ack_lose(self): c = self.Consumer(hostname='bar@x.com') # I will lose c.app.connection_for_read = _amqp_connection() g = Gossip(c) handler = g.election_handlers['topic'] = Mock() self.setup_election(g, c) handler.assert_not_called() def test_on_elect_ack_win_but_no_action(self): c = self.Consumer(hostname='foo@x.com') # I will win c.app.connection_for_read = _amqp_connection() g = Gossip(c) g.election_handlers = {} with patch('celery.worker.consumer.gossip.logger') as logger: self.setup_election(g, c) logger.exception.assert_called() def test_on_node_join(self): c = self.Consumer() c.app.connection_for_read = _amqp_connection() g = Gossip(c) with patch('celery.worker.consumer.gossip.debug') as debug: g.on_node_join(c) debug.assert_called_with('%s joined the party', 'foo@x.com') def test_on_node_leave(self): c = self.Consumer() c.app.connection_for_read = _amqp_connection() g = Gossip(c) with patch('celery.worker.consumer.gossip.debug') as debug: g.on_node_leave(c) debug.assert_called_with('%s left', 'foo@x.com') def test_on_node_lost(self): c = self.Consumer() c.app.connection_for_read = _amqp_connection() g = Gossip(c) with patch('celery.worker.consumer.gossip.info') as info: g.on_node_lost(c) info.assert_called_with('missed heartbeat from %s', 'foo@x.com') def test_register_timer(self): c = self.Consumer() c.app.connection_for_read = _amqp_connection() g = Gossip(c) g.register_timer() c.timer.call_repeatedly.assert_called_with(g.interval, g.periodic) tref = g._tref g.register_timer() tref.cancel.assert_called_with() def test_periodic(self): c = self.Consumer() c.app.connection_for_read = _amqp_connection() g = Gossip(c) g.on_node_lost = Mock() state = g.state = Mock() worker = Mock() state.workers = {'foo': worker} worker.alive = True worker.hostname = 'foo' g.periodic() worker.alive = False g.periodic() g.on_node_lost.assert_called_with(worker) with pytest.raises(KeyError): state.workers['foo'] def test_on_message__task(self): c = self.Consumer() c.app.connection_for_read = _amqp_connection() g = Gossip(c) assert g.enabled message = Mock(name='message') message.delivery_info = {'routing_key': 'task.failed'} g.on_message(Mock(name='prepare'), message) def test_on_message(self): c = self.Consumer() c.app.connection_for_read = _amqp_connection() g = Gossip(c) assert g.enabled prepare = Mock() prepare.return_value = 'worker-online', {} c.app.events.State.assert_called_with( on_node_join=g.on_node_join, on_node_leave=g.on_node_leave, max_tasks_in_memory=1, ) g.update_state = Mock() worker = Mock() g.on_node_join = Mock() g.on_node_leave = Mock() g.update_state.return_value = worker, 1 message = Mock() message.delivery_info = {'routing_key': 'worker-online'} message.headers = {'hostname': 'other'} handler = g.event_handlers['worker-online'] = Mock() g.on_message(prepare, message) handler.assert_called_with(message.payload) g.event_handlers = {} g.on_message(prepare, message) message.delivery_info = {'routing_key': 'worker-offline'} prepare.return_value = 'worker-offline', {} g.on_message(prepare, message) message.delivery_info = {'routing_key': 'worker-baz'} prepare.return_value = 'worker-baz', {} g.update_state.return_value = worker, 0 g.on_message(prepare, message) message.headers = {'hostname': g.hostname} g.on_message(prepare, message) g.clock.forward.assert_called_with()